Twitter co-founder Evan Williams discusses the success behind Twitter on popular American Talk Show Charlie Rose.

Charlie Rose really did his research; delving (albeit lightly) into the areas such as; the basics of the site, the frequent twitter downtime, the idea behind the site, the Facebook acquisition and of course, it’s business model.

He openly admits that he is unable to explain Twitters success but feels confident that it’s still very early days and there’s much more yet to come from the company. With regard to the business model, he also openly admits they have yet to finalise their approach, however they “have a few ideas” – the question is whether the chosen idea is “a ‘killer’ revenue model or a survival revenue model”.